Energion Nuos Plus 250 - Boiler Atag - Free user manual and instructions

USER MANUAL Energion Nuos Plus 250 Atag

WHITE (1000W)BROWN (1500W) BLUE

0. STD (installation standard)

PROBLÈME CAUSE POSSIBLE COMMENT AGIR

1. Read the instructions and warning in this

manual carefully, they contain important information regarding safe installation, use and maintenance. This manual is an integral part of the product. Hand it on to the next user/owner in case of change of property.

2. The manufacturer shall not liable for any inju-

ry to people, animals or damage to property caused by improper, incorrect or unreasona- ble use or failure to follow the instructions re- ported in this publication.

3. Installation and maintenance must be per-

formed by professionally qualifi ed personnel as specifi ed in the relative paragraphs. Only use original spare parts. Failure to observe the above instructions can compromise the safety of the appliance and relieves the man- ufacturer of any liability for the consequences.

4. DO NOT leave the packaging materials (sta-

ples, plastic bags, expanded polystyrene, etc.) within the reach of children they can cause serious injury.

5. The appliance may not be used by persons

under 8 years of age, with reduced physical, sensory or mental capacity, or lacking the requisite experience and familiarity, unless under supervision or following instruction in the safe use of the appliance and the haz- ards attendant on such use. DO NOT per- mit children to play with the appliance. User cleaning and maintenance may not be done by unsupervised children.

6. DO NOT touch the appliance when barefoot

or if any part of your body is wet.

7. Before using the device and after routine or

extraordinary maintenance, we recommend fi lling the appliance’s tank with water and drain- ing it completely to remove any residual impu- rities.

8. If the appliance is equipped with a power cord,

the latter may only be replaced by an author- ised service centre or professional technician.

9. It is mandatory to screw o the water inlet pipe

of the unit a safety valve in accordance with national regulations. In countries which have enacted EN 1487, the safety group must be calibrated to a maximum pressure of 0,7 MPa and include at least a cock, check valve and control, safety valve and hydraulic load cut- out.

10. Do not tamper with the overpressure safety

device (valve or safety group), if supplied to- gether with the appliance; trip it from time to time to ensure that it is not jammed and to re- move any scale deposits.

11. It is normal water drips from the overpressure

safety device when the appliance is heating. For this reason, the drain must be connected, always left open to the atmosphere, with a drainage pipe installed in a continuous down- ward slope and in a place free of ice.

12. Make sure you drain the appliance and dis-

connect it from the power grid when it is out of service in an area subject to subzero tem- peratures.

13. Water heated to over 50 °C can cause imme-

diate serious burns if delivered directly to the taps. Children, disabled persons and the aged are particularly at risk. We recommend install- ing a thermostatic mixer valve on the water delivery line, marked with a red collar.

14. Do not leave fl ammable materials in contact

with or in the vicinity of the appliance.

15. Do not place anything under the water heater

which may be damaged by a leak..

16. The water heating heat pump is supplied with

a sucient amount of R134a or R513a refrig- erant for its operation. This refrigerant fluid does not damage the atmosphere’s ozone layer, is not flammable and does not cause ex- plosions; however any maintenance activities or work on the refrigerant circuit must only be carried out by authorised personnel and with the use of suitable equipment.20 /EN SAFETY REGULATIONS Key to symbols: Failure to comply with this warning implies the risk of personal injury, in some circumstances even fatal. Failure to comply with this warning may result in serious damage to property, plants or animals. The manufacturer is not liable for damage resulting from improper use of the product or failure to install it as instructed herein. Install the appliance on a solid basement which is not subject to vibration. Noisiness during operation. When drilling holes in the wall for installation purposes, take care not to damage any electrical wiring or existing piping. Electrocution caused by contact with live wires. Damage to existing installations. Flooding caused by water leaking from damaged pipes. Perform all electrical connections using wires which have a suitable section. The connection product must be carried out following the in

structions provided in the relative paragraph. Fire caused by overheating due to electrical cur- rent passing through undersized cables. Protect all connection pipes and wires in order to prevent them from being damaged. Electrocution caused by contact with live wires. Flooding caused by water leaking from damaged piping. Make sure the installation site and any systems to which the appliance must be connected com

ply with the applicable norms in force. Electrocution caused by contact with live wires which have been installed incorrectly. Damage to the appliance caused by improper op- erating conditions. Use manual tools and equipment that are suit

able for the intended use (in particular, ensure that the tool is not worn and that the handle is intact and securely fixed); use them correctly and prevent them falling from a height. Put them safely back in place after use. Personal injury caused by flying splinters or frag- ments, inhalation of dust, knocks, cuts, puncture wounds and abrasions. Damage to the appliance or surrounding objects caused by falling splinters, knocks and incisions. Use electrical equipment that is suitable for the intended use; use the equipment correctly, keep passages clear of the power supply cable, pre

vent the equipment falling from a height, discon- nect and put back in place after use. Personal injury caused by flying splinters or frag- ments, inhalation of dust, knocks, cuts, puncture wounds and abrasions. Damage to the appliance or surrounding objects caused by falling splinters, knocks and incisions. Make sure that any portable ladders are secure

ly positioned, that they are suciently resist- ant, that the steps are intact and not slippery, that these do not move around when someone climbs on them and that someone supervises at all times. Personal injury caused by falling from a height or cuts (stepladders shutting accidentally). Make sure that the work area has adequate hy

giene and health conditions in terms of lighting, ventilation and the solidity of relevant structures. Personal injury caused by knocks, stumbling etc. Protect the appliance and all areas in the vicinity of the work place using suitable material. Damage to the appliance or surrounding objects caused by falling splinters, knocks and incisions. Handle the appliance with suitable protection and with care.. Damage to the appliance or surrounding objects from shocks, knocks, incisions and squashing. During all work procedures, wear individual pro

tective clothing and equipment. It is forbidden to touch the product installed, without shoes or with parts of the body are weti. Personal injury caused by electrocution, falling splinters or fragments, inhalation of dust, shocks, cuts, puncture wounds, abrasions, noise and vibra

tion. Reset all safety and control functions aected by any work performed on the appliance and make sure that they operate correctly before restarting the appliance. Damage or shutdown of the appliance caused by out-of-control operation. Before handling, empty all components that may contain hot water, carrying out any bleeding if necessary. Personal injury caused by burns. Descale the components, in accordance with the instructions of the safety data sheet includ

ed with the product used, while ventilating the room and wearing protective clothing; avoid mix

ing dierent products and protect the appliance and surrounding objects. Personal injury caused by acidic substances com- ing into contact with skin or eyes; inhaling or swal- lowing harmful chemical agents. Damage to the appliance or surrounding objects due to corrosion caused by acidic substances.21 / EN Instructions and technical norms The purchaser pays for the appliance’s installation, which must be carried out by qualified personnel only, in conformity with national regulations in force and any provisions emitted by local author- ities or bodies responsible for public health, and in accordance with the specific manufacturer indications contained in this manu- al. The manufacturer is responsible for the product’s conformity to the relevant construction directives, laws and regulations in force at the time the product is first commercialised. The designer, in- staller and user are each exclusively responsible, in their respec- tive fields, for knowing and observing the legal requirements and technical regulations concerning the design, installation, opera- tion and maintenance of the appliance. Any reference to laws, regulations or technical specifications contained in this manual is purely for information purposes; any new laws introduced or modifications to existing laws are not in any way binding on the manufacturer towards third parties. It is necessary to ensure that the power supply network to which the product is connected complies with the EN 50160 norm (under penalty of warranty invalidation). Relative to France, ensure that installation complies with the NFC 15- 100 norm. The tampering of product integral parts and/or supplied accessories invalidates the warranty. Field of application This appliance is intended for hot water production for domestic use or similar, at temperatures below boiling point. The appliance must be hydraulically connected to a domestic wa- ter supply line and to a power supply network. Air ducts may be used for the entry and discharge of processed air. It is forbidden to use of the appliance for uses other than those specified. Any alternative use of the appliance constitutes im- proper use and is prohibited; in particular, the appliance may not be used in industrial cycles and/or installed in environments exposed to corrosive or explosive materials. The manufacturer shall not be held liable for any damage due to faulty installation, improper use or uses deriving from behaviour that is are not rea- sonably predictable, and incomplete or careless implementation of the instructions contained in this manual. Operating principle The eciency of a heat pump operation is measured by the Co- ecient of Performance (COP), i.e. the ratio between the energy supplied to the appliance (in this case, the heat transferred to the water to be heated) and the electrical energy used (by the com- pressor and the appliance's auxiliary devices). The COP varies according to the type of heat pump and to its relative conditions of operation. For example, a COP value equal to 3 indicates that for every 1 kWh of electrical energy used, the heat pump supplies 3 kWh of heat to the medium to be heated, of which 2 kWh are extracted from the free source. Packaging and supplied accessories The appliance is anchored to a wooden pallet and is protected with polystyrene top cover, wooden edge protectors, and external card- board; all the materials are recyclable and eco-compatible. The following accessories are included: - Connection pipe for condensation water. - 2 ¾” dielectrics joints. - Instruction manual and warranty document. - Energy label and product fiche. - 2 adapters for Ø150 and Ø160 ducts. Product certifications The CE marking of the appliances attests its conformity to the fol- lowing EC Directives, of which it satisfies the essential requisites: - 2014/35/EU on electrical safety LVD (EN/IEC 60335-1; EN/IEC 60335-2-21; EN/IEC 60335-2-40); - 2014/30/EU on electromagnetic compatibility EMC (EN 55014-1; EN 55014-2; EN 61000-3-2; EN 61000-3-3); - RoHS3 (2015/863) on restriction of use on certain hazardous substances in electrical and electronic equipment (EN 50581). - Commission Regulation (UE) n. 814/2013 on ecodesign (n. 2014/C 207/03 - transitional methods of measurement and cal- culation) Verification of performance is carried out through the following technical regulations: - EN 16147; - CAHIER DE CHARGE_103-15/C_2018 Chaue-eau Thermody- namiques pour la marque NF électricité performance; This product complies with: - REACH 1907/2006/EC regulation; - (UE) n. 812/2013 (labelling) regulation - D.M. 174 del 06/04/2004 implementing European Directive 98/83 on the quality of water. - Radio Equipment Directive (RED): ETSI 301489-1, ETSI 301489-17. Identification of the appliance The main information for identifying the appliance is contained on the adhesive data plate located on the water heater casing. A Model B Tank capacity C Serial no. D Power supply voltage. frequency. maximum absorbed power E Max./min. pressure of the refrigeration circuit F Tank protection G Absorbed power – heating element mode H Marks and symbols I Max./min. power in heat pump mode L Type of refrigerant and charge M Maximum tank pressure N global warming potential / Quantity of fluorinated greenhouse gases N22 /EN PRODUCT DESCRIPTION The floor-standing water heating heat pump consists of a top block containing the heat pump unit and the bottom part of the with the storage tank. There is a control panel with a display on the front part. Dimensions A Inlet cold water ¾” connection B Outlet hot water ¾” connection C Condensate drain connection with 14mm diameter D Auxiliary circuit ¾” inlet pipe (SYS and TWIN) E Auxiliary circuit ¾” outlet pipe (SYS and TWIN) F Sheath for upper probe (S3) (SYS and TWIN) G Auxiliary circuit ¾” inlet pipe (TWIN SYS) H Auxiliary circuit ¾” outlet pipe (TWIN SYS) I Sheath for upper probe (S4) (TWIN SYS) L Recirculation ¾” pipe (SYS and TWIN SYS) M Sheath for bottom probe (S2) (SYS and TWIN SYS) N Display O Touch buttons. MODE MENU SET 376 550 (200L) - 810 (250L)1737 (200L) - 1997 (250L)1220 (200L) - 1480 (250L)371 290

eq. 1,859 Global warning potential (R134a) GWP 1430 Max. pressure of refrigerating circuit (low-pressure side) MPa 1 Max. pressure of refrigerating circuit (high-pressure side) MPa 2,7 Max. water temperature with heat pump °C 62 EN 16147 (

h:min 03:59 05:23 05:24 05:15 Heating energy consumption (

kWh 2,478 3,346 3,264 3,224 Max. amount of hot water in a single intake Vmax (

% 130,0 138,0 129,0 133,0 Mixed water at 40°C V40 (

°C 55 55 55 55 Annual electricity consuption (average climatic condition) (

L XL XL XL Indoor sound power level (

m³ 30 Minimum ceiling height of room of installation (

m 1,940 2,200 2,200 2,200 Min. temperature of room of installation °C 1 Max. temperature of room of installation °C 42 Minimum air temperature (w.b. a 90% u.r.) (

°C 42 Further energy data is shown in the Product Data Sheet (Annex A) which is an integral part of this booklet. Products that are not provided with a label and corresponding product fiche for a combination of water heater and solar devices, as specified by Regulation 812/2013, are not intended to be used for these kind of combinations. (A) Values obtained with outdoor air temperature of 7°C and relative humidity of 87%, inlet water temperature of 10°C and temperature set at 55°C (as per the provisions in EN 16147 and CDC 103-15/C-2018). Ducted product Ø200 mm. (B) Values obtained with outdoor air temperature of 7°C and relative humidity of 87%, inlet water temperature of 10°C and temperature set at 55°C (as per the provisions of 2014/C 207/03 - transitional methods of measurement and calculation). Ducted product Ø200 mm. (C) Values obtained from the average of the results as per the provisions in EN 12102-2. Ducted product Ø200 mm. (D) Value that guarantees the correct operation and easy maintenance with non-ducted products. The correct operation of the product is nevertheless guaranteed up to a minimum height of 2.090 m. (E) Beyond the heat pump temperature range of operation, heating of the water is ensured by integration (as per provisions of EN 16147).24 /EN ELECTRICAL WIRING

WHITE (1000W)BROWN (1500W) BLUE

Mainboard (motherboard)

Hermetic rotary compressor

Air/Evaporator/Suction NTC temperature probes

Impressed current anode

Bottom NTC temperature probe (heating element zone)

Top NTC temperature probe (hot water)

Electronic expansion valve

• Possible configurations of the heating element25 / EN

INSTALLING THE APPLIANCE

WARNING! The installation and initial start-up of the appliance must be performed by qualified personnel in compliance with the na- tional regulations in force regarding installation, and in con- formity with any regulations issued by local authorities and public health bodies. The installer is required to observe the instructions outlined in this manual. Once installation is complete, it is the installer’s duty to inform and instruct the user on how to operate the water heater and carry out the main operations correctly. Transport and handling Upon delivery of the product, check that the latter has not been damaged during transport and that no signs of damage appear on the packaging. In the event of damages, immediately notify any claims to the forwarder.

WARNING!THE APPLIANCE SHOULD BE HANDLED AND STORED IN A VER-TICAL POSITION. The product may be handled in a horizontal position only for short distances, while resting on the rear end indicated; in this case, wait at least 3 hours before starting the appliance once it has been cor rectly repositioned in a vertical position and/or installed; this is to ensure that the lubricating oil inside the refrigeration circuit is suit-ably distributed and to avoid damages to the compressor. The packaged appliance may be handled either manually or with the aid of a forklift truck, while ensuring that the above indications are observed. It is advisable to keep the appliance in its original packaging until install-ing it in its chosen location, particularly when construction work is under way on-site.When transporting or handling the appliance after the initial installation, observe the aforementioned indication concerning the allowed tilt angle and ensure that all water has been drained from the tank. Should the original packaging be missing, provide an adequate protection for the appliance to prevent any damages, for which the manufacturer shall not be held liable. Location of the appliance a) In the event of water heaters without an air exhaust duct, the room of installation should have a volume of no less than 30 m3 and must be adequately ventilated. Avoid installing the appliance in rooms which may favour frost build-up. Do not install the product in a room containing an appliance that re quires air to function (e.g. an openchamber gas boiler, open-cham-ber gas water heater, etc.) unless otherwise indicated by local law. The product’s safety and performance levels are not guaranteed in the event of outdoor installation.b) The appliance’s air exhaust and/or extraction duct (if present) must have access to the outside from the point where the appliance is installed. The connections for the air exhaust and aspiration ducts are located on the upper part of the appliance; Ensure that the installation site and the electrical and hydraulic sys-tems to which the appliance must be connected fully comply with the regulations in force;d) The chosen site must have, or must be suitable to house, a sin-gle-phase 220-240 V ~ 50 Hz power supply socket;e) The chosen site must be suitable to house a condensate drainage outlet connected to the lateral of the appliance with a suitable si-phon;f) The chosen site must ensure that the appropriate safety distances observed;g) Ensure that installation of the ducts allows maintenance opera-tions on the evaporator filter;h) Ensure that the plan allows a perfectly vertical operating position;i) The chosen site must conform to the appliance’s IP protection rat-ing (protection against the penetration of liquids) as specified by the regulations in force;j) The appliance must not be exposed to direct sunlight, even when windows are present;k) The appliance must not be exposed to particularly aggressive sub-stances such as acidic vapours, dust or gasfilled environments;;l) The appliance must not be directly installed on telephone lines that are unprotected against overvoltage; m) The appliance must be installed as close as possible to the points of use to limit heat dispersion along the piping; The air aspirated by the product must be free of dust, acicid vapours and solvents.Leave adequate space around the appliance in order to ensure easy access and to facilitate maintenance operations. Leave a minimum distance of 500 mm on both sides of the appliance and the minimum height from the ceiling should be approximately 200 mm for opera-tion without air ducts and 230 mm for the operation with air ducts. V > 30m

min. 200 Positioning on the ground 1) Once the suitable installation position has been located, remove the packaging and remove the fixings on the pallet where the product is based.2) Using the handles provided, remove the product from the pallet.3) Fix the feet on the ground (through the appropriate holes) using suitable screws and rawlplugs.

WARNING! A type of canalization not suitable aects product performance and significantly increases the heating time! Please bear in mind that using air from heated environments may hamper the building’s thermal performance. There is one connection for the air intake and one for the air exhaust on the top side of the appliance. Important: do not remove, break or tamper in any way with the air inlet and outlet grilles (Fig. A). The outlet air may reach temperatures that are 5-10°C lower com- pared to that of the inlet air and, if not ducted, the temperature of the room of installation may drop sensibly. If operation by exhaust or intake to the outside (or another room) of the treated air by the heat pump is foreseen, suitable ducting must be used for air passage. IMPORTANT: we recommend using insulated pipes to avoid the formation of condensation. Ensure that the ducting is connected and fastened securely to the product to prevent accidental disconnections and annoying noises. Install the ducts by following all the heights as shown in (Fig. B). Leave a minimum distance between the product and the ducts to allow for the removal of the evaporator filter.

WARNING: Do not use outdoor grills resulting in high losses, such

as anti-insect grilles. The grids used should allow good air flow, the distance between the inlet and outlet air should not be less than 370 mm. Protect pipes from the external wind. The expulsion of air in the chimney is allowed only if the draft is appropriate, is also required periodic maintenance of the barrel, and chimney accessories. For the maximum length of air ducts, including the terminal, please refer to the “Typical Configurations” table. The total static pressure loss due to installation is calculated by adding the loss of the single installed components; this sum must be lower than the static pressure of the fan (Appendix) ≥ 500≥ 500≥ 200≥ 200ø 150 ø 150ø 200 ø 200ø 200ø 200≥ 200ø 200ø 200≥ 200≥ 200ø 150ø 150≥ 200ø 150ø 150 199,3 158,3 147,3 155,3 FIG. A FIG. B TYPICAL CONFIGURATIONS Type Maximum piping length L1 exhaust + L2 intake ø150 (PVC) 22 [m] 19 [m] 16 [m] 19 [m] ø160 (PEHD) 28 [m] 24 [m] 20 [m] 24 [m] When a curve is added:

• 90° (PEHD) remove 4 m from the permitted length

• 45° (PEHD) remove 2 m from the permitted length

• 90° (PVC) remove 3 m from the permitted length

• 45° (PVC) remove 1.5 m from the permitted length L1 L1L2 L2 L1 L1 L2 L2 Model 200 l 250 l ø 150 mm ≥2050 mm ≥2310 mm ø 160 mm (PEHD) ≥2140 mm ≥2400 mm ø 200 mm ≥2060 mm ≥2320 mm Table with minimum ceiling heights for ducted installation27 / EN HYDRAULIC CONNECTIONS Before using the product, we recommend filling its tank with water and draining it completely so as to remove the residual impurities.Connect the water heater inlet and outlet to pipes or pipe fittings that can withstand the operating pressure and temperature of the hot water, which may reach 75°C. It is not advisable to use materials that cannot withstand such temperatures. The dielectric union fitting with joint (supplied with the product) must be applied to the hot water outlet pipe, prior to performing the connection.The appliance must not operate with water hardness levels below 12°F; on the other hand (>25°F), it is advisable to use a suitably cali-brated and monitored water softener in the event of particularly hard water; in this event, the residual hardness must not fall below 15°F.Screw a “T” fitting identified by a blue collar onto the appliance’s water inlet pipe. It is mandatory to screw on said fitting a cock for draining the product with a tool on one side, and a suitable device against overpressure on the other side.SAFETY GROUP COMPLIES WITH THE EUROPEAN STANDARD EN 1487Certain countries may require the use of specific safety devices (see next figure for the European Community countries), in line with local legal requirements; it is the responsibility of the qualified installer in charge of installing the product to assess the correctness and suita-bility of the safety device used.The codes for these accessories are:Hydraulic safety assembly 1/2" code 877084(for products with 1/2" diameter inlet pipes)Hydraulic safety assembly 3/4" code 877085(for products with 3/4" diameter inlet pipes)Trap 1" code 877086Do not install any shut-o device (valve, cock, etc.) between the safety unit and the heater itself. The appliance’s drain outlet must be connected to a drain pipe of diameter at least equal to the of theoutlet itself, with a funnel to permit an air gap of at least 20 mm for visual inspection. In addition, a water discharge tube on the outlet is necessary if the emptying tap is opened.When installing the safety device, do not tighten it fully down, and do not tamper with its settings. It is necessary to connect the drain, which must always be left exposed to the atmosphere, with a drain age pipe that is installed sloping downwards in a place with no ice. If the network pressure is closed to the calibrated valve pressure, it will be necessary to apply a pressure reducer far away from the appliance. To avoid any possible damage to the mixer units (taps or shower) it is necessary to drain any impurities from the pipes.The SYS and TWIN SYS versions have a ¾”G coupling for recircula-tion of the hydraulic system (if present).The SYS version coil has two ¾”G couplings, upper (inlet) and lower (outlet), on which to connect an auxiliary source.The TWIN SYS version has two coils on which to connect two dier-ent auxiliary generators. For the TWIN SYS version we recommend you connect any solar heating systems to the lower coil and the other heat generator to the upper one.WARNING! It is advisable to carefully wash the system’s pipes in or-der to remove any residues of screw thread, welding or dirt which may hamper the correct operation of the appliance.

LEGIONELLA BACTERIA FUNCTION

Legionella are small rod shaped bacteria which are a natural constit-uent of all fresh waters.Legionaries’ disease is a serious pneumonia infection caused by in-haling the bacteria Legionella pneumophilia or other Legionella spe-cies. This bacterium is frequently found in domestic, hotel and other wa-ter systems and in water used for air conditioning or air cooling sys-tem. Hence the main intervention against the condition is prevention, through control of the organism in water systems.The European standard CEN/TR 16355 gives recommendations for good practice concerning the prevention of Legionella growth in drinking water installations but existing national regulations remain in force.This storage water heater is supplied with the thermal disinfection cycle deactivated by default. Each time the product is turned on and every 30 days, the system carries out a thermal disinfection cycle raising the temperature of the boiler to 60°C.Warning: when this software has been carrying out the thermal disinfection treatment, water temperature can cause severe burns instantly. Children, disabled and elderly are at highest risk of being scalded. Feel water before bathing or showering. MAX 75°C MAX 75°C MAX 75°C

WARNING! (only for SYS and TWIN SYS versions)Make sure that the temperature detected by the S2, S3 and S4 sen-sors of the auxiliary-source control unit inside the water heater, does not exceed 75°C.28 /EN ELECTRICAL CONNECTIONS WARNING! Before you get access to terminals, all supply circuits must be dis- connected. The appliance is supplied with a power supply cable (should the lat- ter need to be replaced, use only original spare parts supplied by the manufacturer). It is advisable to carry out a check on the electrical system to ver- ify conformity to the regulations in force. Verify that the electrical system can suitably withstand the water heater’s maximum power consumption values (refer to the data plate), in terms of the size of the cables and their conformity to the regulations in force. It is forbidden to use multiple outlet sockets, extension cables or adaptors. It is forbidden to use piping from the water, heating and gas systems for earthing the appliance. Prior to operating the machine, make sure that the electricity mains voltage conforms to the value indicated on the appliance’s data plate. The manufacturer of the ap- pliance shall not be held liable for any damage caused by failure to earth the system or due to anomalies in the electric power supply. To disconnect the appliance from the mains, use a bipolar switch complying with all applicable CEI-EN regulations in force (minimum distance between contacts 3 mm, switch preferably equipped with fuses). The appliance must be connected in compliance with Europe- an and national standards (NFC 15-100 for France). The main circuit board on the appliance is fitted with an earth contact for operating purposes only, not for safety purposes. Open the cover to access the connection board located on the right, rear side of the product and carry out the connections according to the chosen configuration: PERMANENT ELECTRICAL CONNECTION (24h/24h) Use this configuration whenever users do not have a two-tier elec- tricity rate. The water heater will always be connected to the power supply network to ensure 24h operation.

ELECTRICAL CONNECTION WITH DUAL POWER SUPPLY AND HC-HP SIGNAL (power supply 24h/24h) It oers the same cost advantages as the two-tier rate configuration but, additionally, it provides rapid heating thanks to the BOOST mode that activates the heating even with the HP rate.

1) Connect a bipolar cable to the appropriate signal contacts on the

2) Connect the signal bipolar cable (B) to the appropriate EDF con-

nector “SG1” which is inside the connection box (make a hole in the rubber plugs to create a suitable passage section).

WARNING: The EDF signal has a 230V voltage.

AUXILIARY CONNECTION If you have a PV system to be connected or an SG signal available, you can connect a bipolar cable from the inverter or the SG signal cable (alternatively, not both) to the connection box (secure the cable into the dedicated cabling sheath). Connect this cable (C) to the connector called “SG2” and activate the PV (P11) or SG (P13) function via the installer menu.

WARNING: signal 230 V.

Only for SYS or TWIN SYS models, if you have an auxiliary heat gen

erator (e.g. boiler) and you would like to use it instead of the integra- tion carried out by the heating element, you can connect a bipolar cable (D) from the heat generator (if provided) to the product connec- tion box (secure the cable into the dedicated cabling sheath). Connect the cable to the connector called “AUX” and set the P14 parameter to 1 via the installer menu. SG1 SG2 AUX

If you connect the SYS version to the boiler/stove, it is advisable to use upper sensor slot S3. If you connect the TWIN SYS version to the boiler/stove, it is advis- able to use sensor slot S4 for the lower heat exchanger and S3 for the upper one). If you connect the SYS or TWIN SYS versions to the solar control unit (lower heat exchanger), you can use the lower sensor slot on its own (S2) or both sensor slots (S2) and (S3/S4). CABLE FUSE Permanent power supply (cable supplied with the appliance) 3G ø min. 1.5 mm² H05VV-F B 16A Signal HC-HP (cable not supplied with the appliance) 2G ø min. 1 mm² H05VV-F Signal AUX/PV/SG (cable not supplied with the appliance) 2G ø min. 1 mm² H05VV-F Signal BUS* (cable not supplied with the appliance) max. 50 m - 2G ø min. 1 mm²

• IMPORTANT: in the bus connection, to avoid interference problems, use a shielded cable or twisted pair cable. 16 A 16 A 2 A 16 A29 / EN If the product is enabled to work on BUS in order to avoid risks of a power overload, the product will not power the BUS (P33 parameter of the installer menu set to OFF), except for when the product is a cascade MASTER. It is therefore necessary to have at least another generator which powers the BUS to complete the start phase. When the product is installed on BUS, all the pa- rameters for the management of domestic hot wa- ter, its special parameters and the system param- eters are shared with all other products, allowing you to use just one remote control.

INSTALLATION TYPES WITH OTHER HEAT GENERATORS

1. Heat pump water heater and separate heat generator (boiler,

heat pump or hybrid system). The products have no integration but can be managed via a single remote control.

2. Heat pump water heater with auxiliary generator (boiler and/or

solar system) with coil. If the system is installed with a boiler acting as a support gener

ator, in order for the heat pump water heater to call the boiler as opposed to the heating element via the BUS, you must set the P14 parameter to value 3 (consult INSTALLER MENU section). Unless otherwise specified in the auxiliary generator manual, the auxiliary generator does not read the water heater sensors; there- fore additional sensors are required depending on the hydraulic circuit diagram.

3. Heat pump water heater in pre-heating of combined heating

generator (boiler or combi hybrid). In order to enable the pre-heating management on the domestic hot water service, set the P14 parameter to 2. In this installation, the water heater and the combi generator share the same DHW tem- perature setting. The water heater temperature can be reduced in pre-set time slots using the T MIN parameter or increased using the PV SET parameter if there is a photovoltaic system. The combi generator does not read the sensors of the water heat- er. Additional sensors are required, depending on the hydraulic circuit diagram.

Bus BridgeNet® START WIZARD This product is compatible with Bus BridgeNet®. Set the SYSTEM and CASCADE parameters as indicated below for correct installation on BUS during the start phase:

• SYSTEM = NO The product is not connected on BUS or is only connected to a remote control.

• SYSTEM = YES Cascade = NO The product is installed on a system on bus with other compatible heat generators (solar heating, boiler, hybrid system or heat pump), at least one of which is powering the BUS. In presence of a Wi-Fi gateway on BUS (installed on remote control or on heat generator), the heating and domestic hot water services can be managed via a single app for smartphones.

• SYSTEM = YES Cascade = YES The product is installed on a cascade system (max 8) for commer

cial or collective use. After setting the CASCADE option, confirm whether the product is the MASTER or one of the cascade SLAVES. The BUS allows you to align all the user operating parameters on the MASTER product with those on the SLAVE products. The SYSTEM and CASCADE parameters aect the P33 and P34 pa- rameters of the installer menu. BUS CONNECTION Connect a cable to the “BUS” connector to manage the heat pump water heater with a single remote control on BUS together with other compatible heat generators

WARNING! The installation and initial start-up of the appliance must be per- formed by qualified personnel in compliance with the national reg- ulations in force regarding installation. CONTROL PANEL The user interface has LCD display and 7 touch buttons. There are 2 blue leds: ON (when the product is power supplied) and BOOST (when BOOST has been activated). MODE MENU SET List of the icons shown on the display: Changeable parameter Wi-Fi enabled (only if present) Schedule programming enabled Day of the week (1 = Sunday) Heat pump active Heating element integration enabled ANTIBACTERIAL function is enabled PV or SG enabled (only if present) When the corresponding mode is active, the secondary string indicates it SILENT function is enabled ANTIFREEZE function is enabled Top temperature sensor > T SETPOINT + 6°C Hot water shower available Estimated Energy Content (based on the set temperature) Once the appliance is connected to the hydraulic and electric sys- tems, the water heater must be filled with water from the domestic water supply network. In order to fill the water heater, it is neces- sary to open the central tap of the domestic network supply and the nearest hot water tap, while making sure that all the air in the tank is gradually expelled. Visually inspect for possible water leaks from the flange and pipe fittings and gently tighten them, if necessary. The heat pump requires 5 minutes to become fully operational when starting it for the first time. WARNING! Hot water at temperatures above 50 °C running from taps may immediately cause serious burns. Children, the disabled and the elderly run a greater risk in this regard. Therefore, it is advisable to use a thermostatic mixing valve connected to the ap

pliance’s water outlet pipe, which is identified by a red collar. WARNING! If the water temperature is higher than the set temperature by 6°C, the display shows the icon

INSTRUCTIONS FOR USE

Press the " " button to turn the water heater on. The display shows the set temperature and operation mode, while the " " symbol and/or " " symbol indicate the operation of the heat pump and/or heating element respectivel. Press the " " button for 1 second to switch o the water heater. The protection against corrosion is ensured. The product ensures that water temperature inside the tank does not fall below 5°C.

SETTING THE TEMPERATURE

Press the “ + ” and “

” to set the desired hot water temperature (T SET POINT, the display will temporarily flash). Press " SET " button to display the temperature of the water in the tank; it will be shown for 3 seconds. In heat pump mode the min/max temperatures achievable are 40°C/55°C, by default settings. This range can be extended (min/max 40°C/62°C) in the installer menu. The maximum achievable tempera- ture with the heating element is 75 °C. Changing the settings on the installer menu this valure can vary. SHOWERS AVAILABLE "

When the display shows the icon, it means that at least one shower is available. The available showers depend on the availability of hot water. One shower is calculated as: 40 l at 40°C.

With the " MODE " button you can modify the operating mode used by the water heater to reach the set temperature. The selected mode will be displayed on the line below the temperature. If the heat pump is active, this symbol appears "

If the electric heating element or integration is enabled, this symbol will appear "

• GREEN only the heat pump works, the priority is given to energy saving. The maximum achievable temperature depends on the value of the P7 parameter (40°C-62 °C) – (refer to Paragraph 7.7). Only for back-up or safety mode (errors, air temperature out of operating range, defrosting process in progress, antilegionnaire’s disease), the heating element may turn on and work.

• COMFORT the water heater reaches set temperature with the rational use of the heat pump and, only if necessary, of the heating element. The priority is given to comfort.

• FAST permanent boost mode, the water heater uses both heat pump and heating element to reach set temperature. The priority is giv

• I-MEMORY mode designed to optimize energy consumption and maximize comfort by monitoring the hot water needs of the user and the optimized use of the heat pump/heating element. The algorithm guarantees each daily need proposing the average of the profiles detected over the previous 4 weeks. In the first week of acquisi- tion, the set point temperature entered by the user remain con- stant; from the second week onwards, the algorithm will automat- ically adjust the set point temperature to ensure daily needs. To reset the I-Memory profile use U9. (IMemory mode is visible when U1: PROGRAM is ”OFF”)

• HC-HP mode heating is performed within HC-HP signal detection in order to heat when low-tari energy is available. The target temperature depend on the particular HC-HP mode selected: - HC-HP: when signal EDF is detected, HP and HE can work (pri- ority is given to HP). Antifreeze protection is guaranteed all day long.

HC-HP_40: when signal EDF is detected it works as HC-HP, oth- erwise temperature is maintened at 40°C (HP only) - HC-HP24h: when signal EDF is detected it works as HC-HP, oth- erwise set temperature is achieved with31 / EN HP only (min/max 40/62°C) The mode can be activated via the installer menu with the P1 parameter.

both heat pump and heating element are used to reach the set temperature in the shortest possible time. Once set temperature is reached, previous working mode is reactivated.

• HOLIDAY o be used during a period of absence. After the period chosen Holyday mode is deactivated and the product will automatically start to work according to previous setting. Holiday mode is set by User Menu. In this mode no heating is performed, antifreeze protection and antibacterial cycle are guaranteeded. USER MENU To access the user menu, press “ MENU ”. The word INFO will appear on the display. Press the “ + ” and “

U2 PRGTIME User can select the desired time slots. U3 PRG SET User can customize the time programming U4 HOLIDAY To activate/deactivate the HOLIDAY mode When On is confirmed the user has to enter the number of days of absence as “Holiday Days" [1, 99] U5 ANTBACT Activated/deactivated status of the antibacterial function disease function (on/o). U6 DATE To set the date (Year, Month, Day) and time (hours and minutes). User can enable/disable the auto switch among solar/legal hour. U7 REPORTS It displays energy consumption (total). U8 SILENT To enable/disable the SILENT mode (On/O) Recommended for unducted installation. U9 I-MRESET To reset the delivery profiles select On and press the SET button. The data saved in the memory is deleted and the learning starts from the current week.

• TIME SCHEDULING U2 PRGTIME parameter. the user can set 4 dierent time slots for each day of the week in the operating modes GREEN, COMFORT e FAST. [START] and [STOP] define the beginning and the end of a time slot. After the fourth time slot, to reset the time slot selected and the ones after, press " " - " until "OFF"is displayed and then press "SET". If a time slot is not set it remains as not defined. Example: the water heating system is active from 8 am to 12 pm and from 4 pm to 8 pm. [START1] = 8:00; [STOP1] = 12:00; [START2] = 16:00; [STOP2] = 20:00; [START3] = 00:00; [STOP3] = 00:00; [START4] = 00:00; [STOP4] = 00:00; If ALL_DAYS is selected the same time slots are assigned from Monday to Sunday. Then each day of the week can be customized one by one, selecting the corresponding parameter. Therefore, each day of the week can be customised one by one by selecting the corresponding parameter.

Warning: if the selected time period is too short, the desired tem

perature may not be reached.

• PROGRAM SETTINGS U3 PRG SET parameter. Program Setting allows to customize the dierent working modes when U1 is ON. PARAMETER

Beyond the time slot, a minimum water tempera

ture is guaranteed. Heat pump to pre-heat water: the set temperature is reached at the beginning of the selected time slots. U3.2 PREHEAT Heat Pump pre-heat the water: set temperature is already achieved at the beginning of the selected time slots INSTALLER MENU

HC-HP Operation with two-tier power supply:

T ANTB Gives the temperature to be achieved [60/75 ° C] with the antibacterial cycle and to be maintained for 1 hour at least.

T MAX Adjustment of the maximum obtainable temperature [65 / 75 °C]. A higher temperature value allows for us- ing a greater amount of hot water.

T MIN Adjustment of the minimum obtainable temperature [40 /50 °C]. A lower temperature setting allows for more energy-ecient operation in the event of limited hot water consumption.

I-M TMIN Minimum temperature to be guaranteed in I-Memory mode when no withdrawns have been detected by the algorithm

TMAX HP Maximum water temperature that can be achieved with the heat pump only. It can be set by the installer in the [40 / 62 °C] range.

TMINAIR Minimum air temperature that ensures the heat pump working; if air temperature goes below this value the compressor is inhibited. It can be set by the installer in the [-10, 10°C] range32 /EN

HYST HP Hysteresis value that allows the heat pump to restart after having achieved the target temperature. It can be set by the installer in the [3 / 12°C] range. P10 TANKVOL This parameter gives the capacity of the tank; it is use

ful in case of spare part customization. P11 PV MODE Operation with PV:

0. OFF (PV disabled - default)

1. PV_HP (PV with HP only)

2. PV_HE (PV with HP and HE1)

3. PV_HEHP (PV with HP and HE1 + HE2)

P12 PV TSET This parameter gives the temperature to be achieved in PV mode. It can be set by the installer in the [55 / 75 °C] range. P13 SG MODE Operation with SG:

0. OFF (SG disabled - default)

1. HP_ON (SG enabled with HP only)

P14 SYSMODE System Operation:

0. STD (standard installation)

1. OUT (The product is configured to operate with a

coil auxiliary load controlled by the direct AUX con

2. PRHE (The product is configured as a generator in

pre-heating to operate with an auxiliary load and share the domestic hot water parameters)

3. SYS (The product is configured to operate with a coil

auxiliary load controlled via Bus) P15 BUZZER Buzzer beep at buttons pressure P16 SILENT Enable/disable the SILENT mode ON (function enabled) OFF (function disabled) P18 FACT RS Restoring the factory settings All the user settings will be reset to default values with the only exception of energy statistics, tank volume and Wi-Fi (if present) P19 MB SW HP-TOP-MB software version as MM.mm.bb. P20 HMI S HP-MED-HMI software version as MM.mm.bb. P21 T LOW Gives the water temperature in °C read by the NTC placed at low position in the water tank. If the NTC is in error “-“ is shown P22 T HIGH Gives the water temperature in °C read by the NTC placed at high position in the water tank. If the NTC is in error “-“ is shown P23 T DOME Gives the water temperature in °C read by the NTC placed at dome position in the water tank. If the NTC is in error “-“ is shown P24 T AIR Gives the air temperature in °C read by the NTC placed on the outside unit. If the NTC is in error “-“ is shown P25 T EVAP Gives the gas temperature in °C read by the NTC placed before the evaporator on the outside unit. If the NTC is in error “-“ is shown P26 T SUCT Gives the gas temperature in °C read by the NTC placed before the compressor on the outside unit. If the NTC is in error “-“ is shown P27 T COND Gives the gas temperature in °C read by the NTC placed after the condenser on the outside unit. If the NTC is in error “-“ is shown P28 T DISC Gives the gas temperature in °C read by the NTC placed after the compressor on the outside unit. If the NTC is in error “-“ is shown P29 T SH Gives the superheating temperature in °C. If the NTC evap or suction are in error “-“ is shown P30 ERRORS Allows navigation among last 10 errors that occurred P31 WI-FISET The Wi-Fi function (if available) can be set to: ON (function enabled) OFF (function disabled) P32 F ANTB Repetition every [1-30] days for the antibacterial cycle if active P33 EBUS POWER ON (function enabled) - OFF (function disabled) P34 HP-TYPE Cascade setting [Master-Slave1,……Slave7]

If you have a photovoltaic system, you can set the product to op- timise use of the electricity produced. After having done the elec- trical connections as described in paragraph 4.11 fig. 14 and set the P11 parameter to other than "0". The signal should be received at least for 5 minutes to enable the photovoltaic function (once the product starts a cycle, it will oper- ate for at least 30 minutes). When the signal is detected, the operating mode works as follow:: - OFF (value 0 – default) PV mode disabled - PV_HP (value 1) When the signal from the inverter is present. The product will reach the set temperature (the highest between T SET POINT and PV TSET) with only the heat pump (max 62°C). - PV HE (value 2) The product will reach the set temperature (the highest between T SET POINT and PV TSET) operating with only the heat pump up to 62°C and if needed with the heating element (1500 W). - PV_HEHP (value 3) set temperature (the highest between T SET POINT and T W PV) is achieved with the heat pump and the heating element (1000 W) up to 62°C. For higher Temeratures than 62 °C the second heating element (1500 W) is activated.

• P13 PARAMETER - SG FUNCTION If you have an SG signal, you can connect the signal cable as de

scribed in the "electrical connections" chapter when the function P13 is enabled the SG icon will be displayed. Once the SIG2 signal has been received for at least 5 minutes (once the product starts a cycle, it will work for at least 30 minutes), the name of the selected mode alternates with the text SG ON and the current operating mode is automatically changed by thermo- stating the product at set temperature (the maximum between T SET POINT and PV TSET), operating only with the heat pump (max 62 ° C).

staller's menu. Once activated, the symbol appears on the display

ANTI-FROST FUNCTION If the temperature of the water in the tank falls below 5 °C while the appliance is powered, the heating element (1000 W) will be automat

ically activated to heat the water up to 16 °C. DEFROST "

The defrost function is activated when the heat pump has been work- ing for at least 20 minutes, the detected air temperature is below 15°C and the evaporator temperature is decreasing rapidly. When the defrost cycle is running, the icon to the side is displayed.33 / EN

CAUTION! Before intervening on the product by following the indications below, check the correct electrical connection of the components to the mainboard and the correct position of the NTC sensors in their seats. Error code Cause Heating element operation Heat pump operation What to do 007 NTC Condenser: Open or Short Circuit ON OFF Verify NTC Condenser proper functioning

NTC Discharge (Compressor Outlet):Open or Short Circuit ON OFF Verify NTC Discharge proper functioning 009 NTC Air: Open or Short Circuit ON OFF Verify NTC Air proper functioning 010 NTC Evap: Open or Short Circuit ON OFF Verify NTC Evap proper functioning 012 NTC Suction (Compressor Inlet): Open or Short Circuit ON OFF Verify NTC Suction proper functioning 021 Gas Leak ON OFF Verify compressor inlet sensor proper functioning. If the error persists, recover residual gas; find the leak in the cooling circuit; repair it; make vacuum and recharge circuit with 1100g of refrigerant gas 032 Compressor Issue ON OFF Check power voltage on compressor connector. 042 Evaporator Obstructed ON OFF Turn o the appliance. Check that the evaporator and the external unit casing is not obstructed. 044 Fan Issue ON OFF Check power voltage on fan connector. Control the proper functioning of sensor at compressor inlet. 051 High Pressure ON OFF Check pressure switch wiring. Verify gas quantity. 053 Compressor Thermal Protector: KO ON OFF Check compressor connector. 081 Electronic Expansion Valve Issue ON OFF Verify expansion valve cables. Verify NTC suction and NTC Evap correct functioning. 218 Dome NTC sensor (hot water): Open or Short Circuit ON OFF Verify NTC sensor (hot water) proper functioning

Water Temperature Sensor (Heating Element Zone): Open or Short Circuit OFF OFF Check the correct assembly of sensor wiring on related mainboard connector. Verify sensor proper functioning.

Water Temperature sensor (Heating Element Zone): safety intervention (1st level). OFF OFF Verify sensor proper functioning.

Water Temperature sensor (Heating Element Zone): safety intervention (2nd level). OFF OFF Verify sensor proper functioning. 233 Relay blocked OFF OFF Reset the appliance by pressing the ON/OFF button twice. If the error per

sists, replace the motherboard. 241 Impressed Current Anode: Open Circuit OFF OFF Check the presence of water inside the product. If the error persists, verify the anode proper functioning. Check the correct assembly of anode wiring on related mainboard connector. If the error persists, replace mainboard. DEFAULT SETTINGS The appliance is manufactured with a series of default modes, functions or values, as indicated in the table below:

DEFAULT SET TEMPERATURE

40 °C MAX. TEMPERATURE SETTABLE WITH THE HEAT PUMP 62 °C ANTIBACTERIAL PROTECTION DEACTIVATED HOLIDAY MODE DEACTIVATED DEFROST (active defrost activation) ACTIVATED HC-HP (two-tier rate operation mode) DEACTIVATED HYSTERESIS 12°C FAULTS As soon as a fault occurs, the appliance enters into the fault mode while the display emits flashing signals and visualises the error code. The wa- ter heater will continue supplying hot water if the fault aects only one of two the heating units, by activating the heat pump or heating element. If the fault involves the heat pump, the symbol "HP" will flash on the screen, while the heating element symbol will flash if the fault involves it. If both components are aected, both symbols will flash.34 /EN 314 ON / OFF repeated OFF OFF Wait 15 minutes before unlocking the product with ON/OFF button 321 Corrupted data OFF OFF Reset the product by pressing the ON / OFF button twice. If the error persists, replace the motherboard.

Missing communication between Main Board and HMI OFF OFF Reset the product by pushing the ON/OFF button twice. If the error persists, replace the mainboard-display communication wiring. 333 Mainboard – WiFi board missing communication ON ON If WiFi present: - Check cables between motherboard and HMI. - If the error persists, replace the HMI module. If WiFi not present: - Enter to the Installer Menu and set P31 OFF. - If the error occurs again, replace the Main Board.

Missing Communication between Inverter and main board ON OFF Check the communication cable and the related motherboard and TDC cables. If the error persists, replace the TDC. 335 Safety board communication failure OFF OFF Reset the product by pressing the ON / OFF button twice. If the error persists, replace the motherboard. 336 Touch screen not working ON ON Reset the product by pressing the ON / OFF button twice. If the error persists, replace the HMI. 337 Cascade master missing OFF OFF Check that at least one of the products in the cascade is set as Master, otherwise set one. WARNING! Observe the general warnings and safety instructions listed in the previous paragraphs and strictly adhere to the indications therein contained. All maintenance operations and interventions should be per- formed by qualified personnel (i.e. with the necessary require- ments as outlined in the applicable norms in force). After routine or extraordinary maintenance, we recommend filling the appliance's tank with water and draining it completely to remove any residual impurities. Use only original spare parts from technical assistance centres that are authorised by the manufacturer.

DRAINING THE APPLIANCE

The appliance must be drained if left inactive in a room subject to frost. When necessary, empty the appliance as follows: - Permanently disconnect the appliance form the mains electricity; - Close the shut-o valve, if installed, or the central tap of the do

mestic water supply network; - Open the hot water tap (washbasin or bathtub); - Open the cock on the safety device (in countries which acknowl- edge EN 1487) or the special cock installed on the "T" fitting, as described in paragraph "Hydraulic connection". ROUTINE MAINTENANCE Partial obstruction of the evaporator filter causes a reduction in prod

uct performance. We therefore recommend cleaning the filter to re- move any dust or obstructions at least once a year. The filter can be extracted using the appropriate clip above the cas- ings. Clean the filter with water and mild soap. Verify that the external terminal of the air exhaust duct, and the duct itself, are not obstruct- ed or have not deteriorated. Ensure that the condensate water runs out in a suitable drain and make sure the discharge is made without hindrance. Check and clean canalizations and grills.

ROUTINE MAINTENANCE PERFORMED BY USERS

It is advisable to rinse out the appliance after each routine or extraor- dinary maintenance intervention. The pressure safety device must be operated regularly to verify that it is not clogged and to remove any limescale deposits. Check that the condensate drainage pipe is not obstructed.

WATER HEATER DISPOSAL

The appliance contains refrigerant gas which must not be released into the atmosphere. In case of permanent decommissioning of the water heater, ensure that disposal procedures are carried out by qualified personnel only. MAINTENANCE (for authorized personnel) This product conforms to WEEE Directive 2012/19/EU. The barred bin symbol on the appliance and its pack- aging indicates that the product must be scrapped separately from other waste at the end of its service life. The user must therefore hand the equipment over to a sorted waste disposal facility for electro-technical and electronic equip- ment at the end of its service life. Alternatively, the equipment may be returned to the retailer at the time of purchase of a new equivalent type of appliance. Electronic equipment of size less than 25 cm can be handed over to any electronics equipment retailer whose sales area is at least 400 m² for disposal free of charge and without any obligation to purchase new product. Sort- ed waste collection for recycling, treatment and environmentally compatible scrapping contributes to the prevention of damage to the environment and promotes reuse/recycling. For more de- tailed information on the collection systems available, contact the local waste disposal service or the shop where the product was purchased.35 / EN

PROBLEM POSSIBLE CAUSE WHAT TO DO

The water delivered is cold or insuciently hot Temperature setting is low Raise the water temperature setting Machine malfunctioning Check for errors on the display and follow the instructions on the “Er

rors” table No electrical connection, wires disconnected or damaged Check the voltage on the power terminals, check the condition of the wires and connections HC/HP signal missing (if the product is installed with EDF signal cable) To check the operation of the product start the “Boost” mode; if the out

come is positive check the presence of the HC/HP signal from the meter and check that the EDF cabling is intact Malfunctioning of the timer for the two-tier rate (if the product is installed with this configuration) Check the operation of the day/night meter and that the set time is suf

ficient to heat the water Insucient air flow to the evaporator Clean the grilles and ducts regularly Product is switched OFF Check the mains power supply. Switch the product ON Use of a significant amount of hot water when the product is in heating phase Sensor error Check for NTC errors, even occasional ones. The water is boiling (with possible steam on the taps) High level of limescale build-up in the boiler and components Unplug the power supply, empty the appliance, remove the heating ele

ment sheath and clean the limescale from the inside of the boiler, taking care not to damage the enamel on the boiler and the heating element sheath. Reassemble the product in its original configuration. We recom

mend replacing the flange gasket. Sensor error Check for NTC errors, even occasional ones. Reduced operation of the heat pump, electrical heat

ing element is in almost continuous operation “Time W” value too low Set a lower temperature parameter or a higher “Time W” parameter Installation performed with non-compliant electric- ity power supply (voltage too low) Power the product with the correct voltage Evaporator obstructed or frozen Make sure that the evaporator is clean Problems with the heat pump circuit Check the display for error messages 8 days have not passed yet since: - Initial start-up - Time W parameter change. - Power failure. wait 8 days Insucient hot water flow Leaks or obstructions in the hydraulic circuit Check the circuit for leaks, check the condition of the deflector on the inlet cold water pipe and the integrity of the delivery hot water pipe Water leaking from the pressure safety device It is normal for some water to drip from the device during the heating phase To prevent water from dripping, an expansion vessel must be installed on the delivery system. If the leak continues even after the heating phase, check the calibration of the device and the mains water pressure.

Warning: Never obstruct the device’s discharge outlet!

Increased noise level Presence of an internal obstruction Check the moving components of the unit, clean the fan and other mov

ing parts which could cause noise Some components are vibrating Check the components connected using mobile clamps, ensuring the screws are well tightened Problems with viewing the display or the display turn

ing o Failure or electrical connection problems between the motherboard and the interface PCB Check the connection status and the correct operation of the PCBs. Power failure Check the power supply A bad odour is coming from the product No siphon or siphon is empty Install a siphon. Ensure it contains the necessary amount of water Abnormal or excessive consumption than expected Leaks or partial obstruction in the refrigerant gas circuit Switch the product ON in heat pump mode, use a leak detector for the specific type of gas to ensure there are no leaks Unfavourable environmental or installation conditions Evaporator is partially obstructed Check the condition of the evaporator, grille and conduits to ensure they are clean Non-compliant installation Other Contact technical assistance TROUBLESHOOTING36 /DE ALLGEMEINE SICHERHEITSANWEISUNGEN

WHITE (1000W)BROWN (1500W) BLUE

0. STD (Standardinstallation)

WHITE (1000W)BROWN (1500W) BLUE